From owner-freebsd-threads@FreeBSD.ORG  Tue Oct  7 03:30:46 2008
Return-Path: <owner-freebsd-threads@FreeBSD.ORG>
Delivered-To: freebsd-threads@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id BC9B8106568A
	for <freebsd-threads@freebsd.org>; Tue,  7 Oct 2008 03:30:46 +0000 (UTC)
	(envelope-from davidxu@freebsd.org)
Received: from freefall.freebsd.org (freefall.freebsd.org
	[IPv6:2001:4f8:fff6::28])
	by mx1.freebsd.org (Postfix) with ESMTP id 928DB8FC15;
	Tue,  7 Oct 2008 03:30:46 +0000 (UTC)
	(envelope-from davidxu@freebsd.org)
Received: from apple.my.domain (root@localhost [127.0.0.1])
	by freefall.freebsd.org (8.14.2/8.14.2) with ESMTP id m973Uh9Y016872;
	Tue, 7 Oct 2008 03:30:45 GMT (envelope-from davidxu@freebsd.org)
Message-ID: <48EAD851.7000404@freebsd.org>
Date: Tue, 07 Oct 2008 11:32:33 +0800
From: David Xu <davidxu@freebsd.org>
User-Agent: Thunderbird 2.0.0.9 (X11/20080612)
MIME-Version: 1.0
To: Petri Helenius <petri@helenius.fi>
References: <48EA8320.5050500@helenius.fi>
In-Reply-To: <48EA8320.5050500@helenius.fi>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Cc: freebsd-threads@freebsd.org
Subject: Re: getrusage with pthreads
X-BeenThere: freebsd-threads@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Threading on FreeBSD <freebsd-threads.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-threads>, 
	<mailto:freebsd-threads-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-threads>
List-Post: <mailto:freebsd-threads@freebsd.org>
List-Help: <mailto:freebsd-threads-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-threads>,
	<mailto:freebsd-threads-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 07 Oct 2008 03:30:46 -0000

Petri Helenius wrote:
> 
> Is there a way to get thread-specific CPU utilization like the getrusage 
> returns for the whole process? Looking at the kernel sources the 
> utilization is accumulated on thread basis and then summed up but it 
> would be useful to be able to determine utilization on a single thread 
> between two checkpoints. Would pmc or ITIMER_PROF help?
> 
> Pete
> 

You can use clock_gettime(CLOCK_THREAD_CPUTIME_ID), but I admit
getrusage like function is better.

Regards,
David Xu